Measuring Inserts are used in Size Inspection Instruments and to measure the size over/between balls.
FRENCO measuring inserts are always manufactured from carbide (1500HV) to minimise wear.
| Design | For ball dia. | 
|---|---|
| Measuring balls soldered onto shaft, thread M2.5 | 1 to 7 mm | 
| Measuring balls soldered onto shaft, thread M4 | 5 to 12 mm | 
 For diameters smaller than 1.5 mm.
For diameters smaller than 1.5 mm.
| Design | Radius | 
|---|---|
| Including M2 thread | Smaller than 0.75 mm | 
| Including M2.5 thread (Standard) | Smaller than 0.75 mm | 
| Including M3 thread | Smaller than 0.75 mm | 
 For the size inspection of spur gears.
For the size inspection of spur gears.
| Material | Accuracy | Application | 
|---|---|---|
| Carbide | ±0.001 mm | Precision workpieces | 
| Carbide | ±0.0005 mm | Gauge inspection | 
| Carbide | ±0.0005 mm | Masters and Artefacts |